<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>99乘法表</title>
    <style>
        table{
            text-align: center;
            font-size: 30px;
            margin: auto;
            margin-top: 50px;
        }
        td{
            border: 1px solid;
        }
    </style>
    <script>
        document.write("<table>")
        for (var i = 1; i <= 9; i++) {

            document.write("<tr>")
            for (var j = 1; j <= i; j++) {
                document.write("<td>")
                document.write(i + "*" + j + "="+(i * j) + "&nbsp;&nbsp;&nbsp;")
                document.write("</td>")
            }
              document.write("</tr>")
        }
        document.write("</table>")
    </script>
</head>
<body>

</body>
</html>